Mechanism for updating vector database

[svenseeberg]

The vector database needs to be up to date to our content and be synchronized with our search engine/server.

[svenseeberg]

We should create a management command that retrieves the pages endpoint for a region in all languages and stores the result in our database. This should be executed via cron job once a day(?).

[svenseeberg]

We can set up a periodic task in the Chat back end daemon with celery. This can fetch the /pages endpoint for all languages of a region and update the Milvus database.